Type-writing machine.



A. G. E. KUROWSKI. TYPE WRITING MACHINE.

APPLICATION FILED DEG.16, 1910. A

1 ,090,480. Patented Mar. l?, 1914. @Y

pero eraree entre# f ALFRED r.A Konowsiir, or New Yoan. N. assicuriamo UNDERWoon 'ri/re- Wnrrea COMPANY. or new rena, n. Y., a eoeronil'rron or nieuwere.'

v rrrawarrmo Miramare.

Specification of Lettersatent.

Patented Mar., .11?, 91411.

Application filed December i6, 1910. Serial o. 597,648.

siding in the borough of Brooklyn, city of i New l ork. in the county of Kings and State i ot' New York. have invented cert-ain new and useful Improvements in rtype-diriting Machines. oi which the followingl is a specitication. l

This invention relates to means for indieating to the operator ot a tlvpewriting inaehine when the page of writing is linished, so that he may not attempt to write too close lo the bottom edge ot the work sheet. It has been found dil'licull to construct practicable devices of this nature, principally for ihe reason that space is very limited in the vicinity ot' the printing point on the typewriter. and it hasl been louud particularly ditlicult. to arrange within this limited space a practicable indicator which can be controlled by the work sheet.

One oi the objects ci this invention is to overcome this ditl'icjulty; and l arrange the mechanism wheredt is not only removed vfrom the printing' line.. but is also accessible, and is readily controlled by the work sheet.

One of the main distinctions between the present and prior constructions, lies ina change in the method of ope-ration. Instead of having the platen locked (or other indication given) `as soon as the -sheet operates the locking or indicating mechanism, l contrive to postpone the locking or indicating until the Work sheet has advanced for a substantial distance after-operating the lockin or indicating mechanism. Heretofore'sucmechanism has been operated at. the Writing ofthe last line on the` sheet. According to my invention, the indicating mechanism .may be operated when there are still many lines to kbe Written upon the sheet. Although the indicating mechanism set, still 'the actual giving of the indication can be deferred until the remaining lines are written upon the sheet; Wliereu on the lock or other indicator will become e fective at the writing .Of the nal line on the page. l provide an interponent between the sheetpperated dog or other indicating device, and a criver orpart u on the rotating;l platen; effective operation or the indicator or lock being deterred until` said driver or part upon the rotating platen' engages said interponent;whereupon the op. erato'r is notitied that the end of the page has been reached, preferably by means of causing the platen to be locked against further rotation. Hc has been notifie aurally previously by the click of the dog 1) as it engages the ratchet, optically by the flicker of the fingerpiecc 94 at the same moment, and digitally by the sensation of increased resistance to the movement of the feeding lever 6, that the end of the line is near. Between the platen `and the interpellent there is preferably a provision for adjustment. and this adjustment may be made to cover an ample range. so that either a. narrow or deep margin may be le'ltat the bottom of the page.

.ln the accompanying drawings, Figure 1 is a perspective view illustrating one einboiliinent ot' the invention applied to the' platen l'razue of an Underwood writingl nur chine. l'g. i2 is an end View, showing the dorr held released by a work sheet. Fig. 3 showslhe positionsI assumed bythe parts at the moment the dog is tripped. Fig. shows the platen arrested against rotation. Fig. 5 shows the dogg' released and the parte reset. Figs. 7 and S are. perspective detail views ot' the stop or driver and its mount, the in.

terponent and the adjustable member respectively. throughthe stop mechanism, the adjustable member being released. l

.l .platen 1 is fixed on an axle 2 journaled in endsI 3 of a platen traine. The usual paperI shelf 5 connects the ends 3. Pressure against a lever (S operates through a slide 'T aud pawl 8 to turn a lille-spaceavheel 9 on the axle 2 and rotate they platen. The platen may also be turned by the finger Wheels 10. Pressure rolls 11` 1F; running on the-bottom of the platen 1, advanceI the work sheets asv the platen is turned.

To indicate-when the sheet 4 has been sufficiently filled. and to prevent the Writing of additional lines, the rotation of the platen isv arrested by a stop or driver 12 (located eccentrically cfa disk or mount 13 having a hub" 17 fast on the axle 2), which stop may strike an interponent 16. Said interponent in the present instance is formed by a barrel 16 having a semicircular slot l5 against-one end of which the stop strikes to arrest the platen. Said interpellent is journaled on the hub 17 of the disk 13, and I preferably lits over the disk 13, (Fig. 9) Which steadies the vinterponent. Axial displacement of said interpellent away vfrom Fig. 9 is a sectional View taken v los the disk is prevented by a shoulder 18 on lthe stop or driver 12,v which overhangs the edges of the slot 15. A spring 22 (Fig. 6)

referably housed between the disk 13 and he interponent 16 holds the interponent in initial position, the rear end 23 of the slot being pressed against the stop 12' as the latter rotates (Figs. 2 and 3) to cause the interponent normally'to turn with the platen. The interponent may be arrested by a sheetcontrolled dog 19. Said dog isfast on a shaft 20 journaled in the ends 3 of the platen frame and is rocked vby a spring to engage a circular rack or ratchet 21on the,

interponent 16. The spring 25 normally causes a trip 26 to enter a. slot 27 inthe paper shelf 5, to enable the. dog 19 to engage the rack 21; but the Vworksheet 4, when in position against the platen, passes beneath and supports the trip outI of said notch to hold the dog idle.V The trip 26 depends into ,the paper throat from the shaft 20 at a point about midway of thev length ofsaid throat, to engage the sheet atl a' point about equidistant from its side edges so that the pressure of the trip will not act as a brake t'o retard and skew the sheet as it'is fed in line-spacing direction. The interponent 16 turns with theplaten 1 as the sheet is advanced, due to the tension of the spring' 22 which presses the rear end 23 of the slot 15 againstthe stop12. AAs thebottorn edge of 'the sheet clears the tri 26, (Fig. 3) the spring 25 becomes eii'ectlve to rock the trip i 'to its slot 27, such movement also rocking tn; shaft` 42O to cause'the dog 19 to engage the rackI 21 tol arrest the inte' "jnent- 16. Further turning of the platen inline-space direction brings the stop 12 .against the. fori so Ward end,14 of the slot 15 (Fig. 4) to lock the platen against rotation, (and incidentally tensions the spring .22). Upon releasing the dog 19, the spring 22 resets the interponent 16 by rotating the latter on the hub 17 until the rearv` end 23 od the slot 15 strikes the stop 12 (Fig.` 5). The stop 12, in the instance given, travels-from endto endofthe slot 15 and as the trippingof the dog 19 always occurs'when the. ottom. edge of the sheet is at a constantdistanrom the printing'line, a4 uniform depth ot'bo't# torn margin. on the' successive lsheets is maintained.. 1f it is desired to make a coi'- rection4 in a'previously written line, after the bottom edge of the sheet has vpassed the tripv 2,6, and before the-sheet'l is removed from the machine, the platen 1 is reversed by turning the Vfngier 'wheel 10. This rotatesthe disk 13 an stop 12 ,until the' latter brings up against the rear end 23'of ,Slot 15,`

to cause theinterponent 16 and rack 21 to turn with the platen. Such reverse rotation of the rack cams the dog 19 out of mesh with the rack tolift the tri 26 out of its slot 27 at the moment when the bottom edge -thedepthof the margin. 1 e To ascertain the necessary adju to catch the bottom edges when the platen Tis rotated backwardly, and cams vsaid sheets downwardly to prevent tanning out, and to direct such bottom edges toward the paper shelf. Depression of a finger piece 24 may rock the shaft 2.0 to release the dog 19 if desired, to permit the platen to be turned, said finger-piece lyingin position to be engaged in the operatlon of inserting the sheet. 4. The distance traversed bythe stop 12 subsequently to the lookin of the interpellent 16, determines the dept -of margin leftatthe bottom of the sheet. This distance may be varied by the adjustment of-amember 29 relatively to the stop12..v` Such member, in, the present instance, is formed byan arm extending across the slot 15 and having a hub 31 journaled on ,the hub 17. Said 'arm is held against rotation relatively to the interponent lt'by a cletentl 33 preferably entering between any two teeth of the circular rack 21. To regulate the depthfof the margin, the arm 29 is first slid axially (Fig. 9)

to release the detent. 33 lfrom theraclr 21 after which it is rotated on the hub 17 toward or from the stop 12 to decrease or increase the distance'between saidstop and the arm. When properly adjusted the arm is" returned toward the interponent 16 to enter the detent 33 between the teeth of the rack, said rack preferably' having teeth equal in number to the teeth of the line space wheel 9, so' that the platen will be. arrested at the end of a line" space. spring 34 prevents. accidental disengagement of the detent and rack. The hub 31 1s of, such length as "to hold the arm parallel withthe interponent 16 "andA may serve'as a stop to limit thereleasing movement Ioi the arm, (Fig. 9). The regulating arm 29 `turns with the interponentl 1 6 as lthesheet is advanced, and is arrested therewith by 'the dog 19, The bottoni margin is narrow'est Awhen th stop-12' travels the full length of slot 15 a er the arrest of the interponent 16. Therefore, by setting the arm 29 between the stop 12 (when in normal position, Fig.

lio

2) and the end 14 rof theslot 15, the travel of the 'stopafter the arrest of the mter.

ponent,` is reduced, and consequently the travel of the platen isshortened, to increase margin, the 'arm is rst adjusted to idle 0- sition behind the'end 14 of the slot 15, a er which a sheet is introduced into the ma- .chine, andthe platen turned'until the'desired length of 'sheet has passed the printentof' ing line, Whereuponthe platen is held idle and the arm is adjusted to engage the stop', which operation, in effect, shortens the slot.

To atlord support when an atempt Iis made to operatethe locked `platen by the line-spacing mechanism, tl e interponent preferably has a pair of diainetrically opposed semi-circular slots-15, 15a through which project similarly opposed stops or drivers 12, 12a, twooppositely extending reeulating Aarms 29, 29a being carried by the htib 31, to coperate with the stops. For 'convenience of. adjustment, said arms 29, 29 may be connected by a lrnurled annulus which is readily grasped when an adjust# Y ment is tobe made.

reset the interponent upon release ofthe dog. 2. In a typewriting machine, the combina-` tion'with a rotatable platen,l of a driver tast 011 the axle of said platen, an interponent spaced apart from the driver to provide lost motion, said interponent normally turning with theV platen, a sheet-controlled dog to arrest thev interponent in the path of .the driver to indicate something to the operator, and means to reset the interponent'upon release of the-dog.

3. In a typewriting machine, tlie combinaY tion with a rotatable platen, of a' driver` turning therewith, an interponent normally spaced apart Vfrom the driver and turningr with the platen, a sheet-controlled trip moving a dog to arrest the interponent in theV path of the driver toindicate something, and means-to reset ,the interponent upon the release of the dog. A

el. In atypewriting machine, the combina tion Withf a rotatable' platen `of a driver turning therewith.,r an interponent normally spaced apart from, the driver and turning with the platen, a sheet-controlled trip mov ing. a dog t0 arrest the interponentin the path of thejdriverto indicate something,

and means tensioned. by ,the rotation of the i platen after the arrest of the interponcnl` to reset the interponent ilpon the release of the dog.

5. In a typewriting machine, the combination with a rotatable platen, of paper-end indicating mechanism including a sheetcontrolled dog, a rotatableinterponent turn ing on an axis concentric with the platen arrested by said dog, a driver fast on the platen axle to engage said interponent when arrested, to indicate something, and means to yieldingly hold the interponent in advance of the driver until arrested by the dog, and to reset the interponent after the release of the dog.

(i. In a typeu'riting machine, the eombination with a rotatable platen, of means to arrest the platen including a. dog, a toothed interponent connected to the platen and engaged by the dog, and a pivoted sheet-controlled strip to maintain, the dog idle, normally in idle position, terminating in a guide to direct the bottom edge of the sheet toward the paper shelf when the feed is rcversed subsequently to the passage ot said bottomedge from beneath the trip.

i'. ln a typcwriting machine, the combination with a rotatable platen, ot' means to arrest the .platen including a do-g, a toothed interponent connected to the platen and engaged by the dog, and a pivoted sheet-controlled trip to maintain the dog idle, normally supported by the sheet and being vibrated when the sheet feed is reversed to avoid obstructing the return of the bottom y edge of the sheet.

8. In a typewriting machine, the combination with a rotatable platen arranged to feed sheets, of means to arrest the platen When turned in one direction, including a trip normally lying in the. path of the sheets, said arresting means comprising'a member antomatically effective to move the trip to permit sheets to pass it when the direction of rotation of the platen is'reversed.

` 9. In a typewriting machine, the combination with a rotatable platen, of a driver turning therewith, means for arresting the driver, said means comprising a regulating member adjustable in the path of the driver and rotatable with the platen to provide lost motion for the arresting means, and sheetcontrolled means to arrest the adjustable` member.

10. In a typewriting machine, the combination `with a rotatable platen, of a driver fixed to turn therewith, an interpcncnt loosely mounted relatively to the platen and in the path of the driver', a regulatingnicniber borne by the interponent, and sheetcontrolled means to arrest theinterponent and regulating member.

11. In a typewriting machine, tl1eco1nbination with a rotatable platen, of a driver fixed lto turn therewith, an interponent loosely mounted relatively to the platen and inthe path of the driver, a. regulating member borne by the interponent and adjustable relatively. thereto, means to hold the member Where adjustedv on the interponent, l

and sheetcontrolled means to arrest the interponent and regulating member.

12. Ina typewriting machine, the combination with a rotatable platen and its axle,

of a driver 'fixed to turn therewith, an interponent loose on the axle, and held a predetermined distance inA advance of the driver as the latter rotates to provide lost motion, and sheet-controlled means to arrest the interponent.

13. In a typewriting machine, the combination with a rotatable platen, of a driver fixed to turn with the platen about its axis, an interponent loosely mounted relatively to the platenand turning with the platen, said interponent having a series of notches, a regulating member ladjustable relatively to the inter onent and having a detent to enter any of t e notches to hold the interponent and regulating member where ad'usted re1- atively to each other, the driver located between theinterponen't and regulating member, and a sheet-controlled dog-to enter any of said notches to arrest the interponent, and its member relatively to: the driver.

14. In a typewritingmachine, the comb nation with a rotatable platen of a driver fixed to turn with the platenv about its axis, an interponent loosely mounted relatively to the platen and having a .regulating member connected thereto, one in advance and the other in rear'of lthe driver, yielding means to hold the interponentngainst the back ofthe driver, and "sheet-controlled means to arrest the interponent.' Y 15. In a typewritin machine, thevcom bination with a rotate leplaten having an" axle, o a driver fixed to turn with `the'y platen, an interponent rotatable on" the axle and having a series of notches, aregulat- H ing member having a detent toenter' any of 'the notches to connect it to the interponent against independent rotation, means to ress the interponent against the back --o the; driver whereby the regulating member is held a predetermineddistance in advance ofV vthe driver as the latter turns, and a sheetcontrolled dog to enter any of the notches on the interponent to arrest the rotation thereof and of the regulating member.

16. In a typewrit'ng machine, the combination' with a rotatable platen having an axle, of a driver fixed to turn with vthe' platen, an interponent rotatable on the axle and having a series of notches, a regulating member having a detent to enter any of the notches to connect it lto the interponent `against independent rotation, said regulating member being axially shiftable relatively to the interponent, a springto prevent 'accidental disengagement of the regulating member, means to cause the interponent normally to turn with the platen, anda sheetcontrolled dog to arrest the interponent'.

17. In` a typewriting machine, the combination with a rotatable platen having an axle, of a driver fixed to turn withthe axle,

an interponent rotatable on the axle, a regu- 18.' In a 'typewriting machine, the combination with a rotatable platen'of a driver fixed to turn therewith, a sheet-controlled dog, a ratchet rotatable independently of the platen and arrested by the dog, a regulating member adj ustablyconnected to the ratchet and lying Ain the ath of the driver, yielding platen unt-il arrested by the dog and"to reset the regulating] member 'upon ,the release of the ratchet.

19.l In a typewriting machine, the combi-.

nation with a rotatable platen, of'a driver fixed lto turn therewith, an interponent normally turning with the platen inthe path of the driver, a trip mechamsm to hold the `interponent against turning, and means to reset the interponent relatively to the driver .uponthe release ofl the trip mechanism.

20.' In aA typewriting machine, the combination with a rotatable platen having an axle, of a driver fixed to turn with the platen, an interponent loosely mounted relatively to the platen and having an'arcuate means to causet e ratchet to turn with the slot through which the driver projects, yieldingmeans to Apress one end of the slot against the driver to cause the interponent to turn with' the platen, a regulating arm Journaled relatively totheA axle, and extending across the slot, said arm adjustablyconnected to the interponent to turn-therewith, and sheetcontrolled' meansengaging the interponent t'oarrest the arm. 21. In a typewriting machine, the comblnation with a platen,}I of 'a driver tixed'to turn therewith, 'an A`interponent 'looselyv llll-.(7 ,a slot in whic the driver is entered, yiel mounted relatively to the platen, and havin ing .means to hold the interponent in set position as the platen turns, a sheetcontrolled Adog to arrest the interponent, and a regulating 'member adjustably 'secured "tothe inter,

ponent in the; p'athk oft-he driver to control the deptho'f margin at'the bottomedge of a sheet. 22. In'atypewritmgmachme, thecomblfn'ation witha platen, of a 'driver ixed'to turn therewith, an' interponent looselyv mounted' relatively to the p aten,- andjhaving a slo `.in which the driver isxn'teredf set posltionza-jthe platenlthrns, sheetc'ont o-lled do 'toni-rest thejinter'ponenn an axially shift'a leregulating" member adjustable relatively to and lying inthe path of acechan the drivery'and means to secure theshiftable member vvte the interponent where ad- 23. In a typewriting machine, the combination with a rotatable platen arranged to feed a sheet., of a sheet controlled indicator device tripped by said sheet to become eftective at the writing of a predetermined line when the sheet has advanced a substan tial distance after tripping the device, an interpenent between the platen and indicavtor device, and means for automatically restoring said interponent at the a new sheet. V

24. In a typcwriting machine, the coinbnation. with a rotatable platen, of a driver turning with the platen, a sheet controlled dog, an interponent providing loose motion between the dog and the driver engaged by the dog when tripped topermit some indication to be given later in the operation in sertion of of the device, and means for automatically restoring said interponent, substantially as described.

25. In a typewritino` machine, the combination with a rotatable platen, of a paper-- end indicator. comprising a driver xed to turn with the platen andl projecting through aslot formed in an nterponent, one end of which slet .is held against the driver by a spring to ycause the interpenent to turn nor- Ina-ily with the driver, the sheet adapted to support a trip which holds a deg in idle position until the bottom edge of the sheet passes the trip whereupon a spring causes the deg to arrest the interpenent, the driver traveling in the slot as the platen is further rotated until it strikes the opposite end of the slot or a regulating member' releasably connected to the interponent.

26.1The combination with a rotatable laten and coperating elements arranged to.

therein between said arrestingdevice andv stop, and an elementv adjustable about the axis of the platen and meclflanieally related to the platen and the arresting;l device, so as to define at will, the extent of the lost motion.

28. The combination with a rotatable platen arranged to feed a sheet, of a stop fast te the platen, a toothed wheel concentric with the platen, an indicatingr means operated by the passage ot' a sheet to engage said toothed wheel, a lost motion member bctween said toothed wheel and said step, aud a pin swinging around the axle et' said platen to engage a selected tooth on the wheel to adjust the amount of said lest motion.

E29. In a typewriter, a lost motion mechanism comprising an axle, a driver last on the axle, a stop on the driver, a disk loose on the axle having an arcuate slot in which said stop rides, a second disk loose on said axle having,r an arcuate slot also embracing; said stop, and means for locking said disks together, to vary the length of open slot in which said stop can ride.

SO. In a typewriting machine, the combi- .nationwith a rotatable platen, of a driver turning therewith,- au intcrponent providing lost motion members arranged to permit said platen to turn freely and then arrest it by said driver, said inici-pimentturning with the platen and normally held to provide said lost motion, and sheet-controlled. trip mcchanism operated when the bottom edge ol the sheet is rcmotc-li'oii'i the printing line, to arrest the interponent. i

3l. The combination with a rotatable platen, of an indicator operated by rotation of the platen, a toothed wheel fast en the platen, and a disk rotatable on the platen comprising a detent settablc between the teeth of said toothed wheel to adjust thc operation ci said indicator. i

32. The combination with a rotatable platen, of an indicator operated by rotation of the platen, a toothed wheel fast en the platen, a disk rotatable on thc axle of said platen, a datent fast on said disk, and a spring `urging said dislr against said toothed wheel to cause said detent to engage said toothed wheel and adjust the operation of said indicator. l

33. The combination' with a line-feeding platen, of a settable device whose movement depends upon the passage thereby of the betteln margin of the work-sheet, some member ot said device being in engagement with said work sheet, a member movingl with the platen but arrested by said sheet-con trolletl device when the latter is set,moans to enable the advancing platen to cooperate with said arrested member for subsequently warning` the operator olE the approach of said bottom edge to the printing line on the platen, and an axially movable rotatable member mounted concentrically with said first named member for determiningY the eX- tent oi the line-spacing interval between the setting; of said settable device, and the giving of the warning to the operator.

34. The combination of a revoluble platen, a member movable around the lplaten axis relatively to the laten, a second member .approach of the bottom edge of the {verkaxially and rotate Ily adjustable on the hub sheet to the printing point on the'machine.

, of the first member, means contrulled by the 'ALFRED G.4 F. KUROWSKI.

`Work-sheet for arresting the rst member,4

'and means to enable the platen to coperate bwimesses: with the second member, when thel same is K. FRANKFORT, so arrested, for warning. the c'nperatm.` of the B. GOLDBRG. 

